Refactoring: de-couple Extensions from "script injection System" [render side] : 1

extensions/common/extension_consumer.h

Index: extensions/common/extension_consumer.h
diff --git a/extensions/common/extension_consumer.h b/extensions/common/extension_consumer.h
new file mode 100644
index 0000000000000000000000000000000000000000..e86404010f4e9207904ed2d740a55392f8c2831c
--- /dev/null
+++ b/extensions/common/extension_consumer.h
@@ -0,0 +1,37 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef EXTENSIONS_COMMON_EXTENSION_CONSUMER_H_
+#define EXTENSIONS_COMMON_EXTENSION_CONSUMER_H_
+
+#include "base/memory/ref_counted.h"
+#include "extensions/common/extension.h"
+#include "extensions/common/host_id.h"
+
+namespace extensions {
+
+// A wrapper class which holds an extension and implements the Host interface.
+class ExtensionConsumer : public Host {
+ public:
+  ExtensionConsumer(const scoped_refptr<const Extension>& extension,
+                    const HostID& host_id);
+  ~ExtensionConsumer() override;
+
+  // Host:
+  bool IsEmpty() const override;
+  const std::string& GetContentSecurityPolicy() const override;
+  const GURL& url() const override;
+  const std::string name() const override;
+
+  const Extension* extension() const { return extension_.get(); }
+
+ private:
+  scoped_refptr<const Extension> extension_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExtensionConsumer);
+};
+
+}  // namespace extesions
+
+#endif  // EXTENSIONS_COMMON_EXTENSION_CONSUMER_H_